Trask



Dec. 8, 1953 A. TRASK 2,661,606

CONSOLE AIR CONDITIONER Filed'Feb. 23, 1951 5 Sheets-Sheet l FIE EINVENTOR A LL E N TRASK awe-M ATTORNEYS;

FIE- 1 Dec. 8, 1953 A. TRASK 2,661,606

CONSOLE AIR CONDITIONER Filed Feb. 25, 1951 5 Sheets-Sheet 2 l5 4,INVENTORZ ALLEN TRASK F15 3 fi w/ ATTORNEYS Dec. 8, 1953 A. TRASK2,661,606

CONSOLE AIR CONDITIONER Filed Feb. 25, 1951 5 Sheets-Sheet 3 FIE- E1 I(1:5 4 B GIID EIID 6:19 If! I 1 D (it. QIID @1119 62:3 (III .113

INVENTORI ALLEN TRASK ATTORNEYS Dec. 8, 1953 A. TRASK 2,661,606

CONSOLE AIR CONDITIONER Filed Feb. 25, 1951 FIE. 7

5| T 4 L l 5 SheetsSheet 4 INVENTOR AL LE N TRASK ATTORNEYSI Dec. 8,1953 A. TRASK 2,661,606

CONSOLE AIR CONDITIONER Filed Feb. 25, 1951 PIE. 1[]

5 Sheets-Sheet 5 INVENTORI ALLEN TRASK j gw ATTORNEYS:

Patented Dec. 8, 1953 UNITED STATES PATENT OFFICE-7;

aesnsos I CONSOLE AIR QONDITIONER Allen Traslgbhicago, Ill. 7Application February 23, 1951, Serial No. 212,281

8 Claims. (01. 62-140) This invention relates to self-contained room airconditioners, and more particularly to console type air cooled airconditioners for installation in a room adjacent to a window.

A general object of this invention is a small, compact, simple airconditioner structure of high operating efficiency, that is well adaptedto quantity production at low cost. More specific objects attained bythe new structure disclosed herein are enumerated following:

1. A unit air conditioner constructed with a sheet metal chassis, and awood cabinet of separate panels, which panels may be made in quantityproduction at low cost and quickly assembled separately and directly tothe chassis in the final assembly operation on a quantity productionassembly line.

2. A unit air conditioner constructed with a wood cabinet having aseparate wood front panel easily removable for inspection of, and accessto, the principal internal mechanism parts.

3. A unit air conditioner constructed with a Wood cabinet comprisingseparate panels tightly assembled to a rectangular sheet metal chassisso that the forces and shocks of handling and shipping will betransferred through the wood panels as compression forces borne by thechassis, thus eliminating the need for protective structural strength inthe shipping container therefor, and eliminating the need for shipmentof a wood cabinet in a separate container.

4. A unit air conditioner constructed with a one piece welded,rectangular sheet metal chase sis enclosed in a low cost wood cabinetcomprising two L shaped wood panels demountably attached to the chassissides and extending.

around the chassis front corners to hold in position a separatelydemountable wood front panel, and a wood top panel attached with hingesto the upper rear portion of the chassis.

5. In a unit air conditioner a condensing unit constructed with a threephase air cooled condenser including (1) a fin tube condenser; (2) anevaporative condenser integral with the condenser blower housing andadapted'for using water vapor condensate; and (3) a parallel bare tubecondenser comprising extensions of the tubes of said first fin tubecondenser.

6. A console type air cooled air conditioner wherein the condenser coiloccupies substantially the full internal area. of a horizontal crosssection of the cabinet to achieve exceptional compactness withoutsacrificing any part of the required condenser surface for eflicientlyhandling thefull rated capacity of the unit.

7. A unit air conditioner including anair cooled condensing unit havingits refrigerant discharge conduit from the compressor in direct seriescommunication with a serpentine tube 2 metallically fused to the scrollof the condenser blower housing for utilizing the blower housing as anevaporative condenser for cooling hot refrigerant vapor and forevaporating Water vapor condensate into the outgoing condenser airstream.

8. A unit air conditioner with an air cooledcondensing unit mounted in arectangular sheet metal chassis wherein the compressor unit and thecondenser blower motor are supported on transverse metal rails havingonly their ends at-- tached to the chassis at its internal corners, to

accomplish sound isolation and exceptional quietness of operation.

9. A console type air conditioner adapted for receiving and dischargingcondenser airthrougha window duct, constructed with a condenser airinlet duct and discharge duct in its upper rear cabinet portion, awindow duct adapter frame of horizontally tongue and grooved boardsadapted for being selectively located in the register with said cabinetducts, and tongue and grooved,

fill-in boards of different widths conterminous with said adapter frameand interchangeable in vertical assembly positions for selectively locating the duct adapter frame in register with the window duct. .1

From the experiences of reduction to practice,

laboratory testing, and the sale and use of commercial production airconditioners in the market embodying this invention, it has beendetermined that an air conditioner having a one horse power compressorand a cooling capacity of approximately 11,000 E. t. u. per hour may beconstructed within a cabinet having outside dimensions of 43 inches inheight, 29 inches in width, and 18 inches in depth. This is considerablysmaller than other console type air cooled air conditioners currently onthe market of approximately the same capacity and horse power rating.This smaller size is made possible by the structure disclosed herein,and this smaller size is an important advantage both from the standpoint of appearance with other room furnishings and for installationwithin limited space.

The usual cabinet structure for a console type air conditioner is aunitary structure comprising two side panels, a front panel, and acabinet topall assembled into a cabinet structure and adapted to fitover the air conditioner mechanism as sembled within a chassis. Thisconventional-type A 3 of air conditioner cabinet has severaldisadvantages that are overcome by the cabinet structure disclosed inthis invention. It is expensive to assemble the individual wood panelsinto a separate cabinet structure in a wood working plant, ordepartment, separate from the final assembly line for the complete airconditioner. A wood cabinet assembly is not structurally strong enoughto support and carry the internal air conditioner mechanism in handlingand shipment from thefactory to the fiscal user. The conventional onepiece Wood cabinet must be crated and shipped separately, and thenfinally assembled to the air conditioner chassis the point ofinstallation.

The wood cabinet of this invention is cated in panels by quantityproduction mill work processes and are delivered as separate panels tothe air conditioner assembly line for attachiment to the air conditionerchassis in the final assembly operation. 'l he'panelsare assembledinclosecontact to the. chassis so that the cabinet. partakes of thestructural strength: oft-he: chassis-.. AIL strains, forces, shocks, andpressures of hancling, crating, shipping, and-stacking in a ware--house, are transferred directly through the woodz panels as compressionforces against the l reavfi. one: piece steel. chassis; lit costs much.less toproduce the; panels. of. this; invention. and. assemble them infinal assembly directly .to the chassis, -:separately,. than does toproduce a conventiona-L'one piece wood cabinet. It is not; necessary toship the cabinet separately, and. therefore this invention eliminatesthe. extra cost and: work of separate crating shipping: of; the woodcabinet. to the pointer? fi'nal'install'ation. The substantial cabinetcost retina-- tion of this invention mahespossibl-e a. retail.selling'price reductionthat puts the console air conditioner within.the: price range of other mag'ror household. appliances.

The principal engineering problems involved in constructingsmalt aircooled console' type air conditioners are those ofiheat rejection in thecon.- d ensinginiit, and the rejection-of condensed-wate'r vapor fromthe evaporator. This specification-v will di'scl'ose ii -detaila newthree phase air coolediconden ser for the condensing unit of a smali anconditioner that will efiiciently refe'ct the heat absorbed by theevaporator and opera;-

tionof the compressor and motor, and that efi-ect'i'vefiy' use all thelatent cooling capacity of thecondensate byevaporating it in thecondenser blower scroll constructed as an evaporative "condenser; Thisnew condenser structure makes it possible to build more condensing capacity into asmauer space within an air conditioner chassis. Thiscondenser structure is largely' respohsiblefor the exceptionally smalland compact size which air conditioners may bebuilt when embodying thisinvention.

These and other objects and'advantages of this invention willmoref'ul-ly' appear from thefollowing description made in 'connection withthe ac companying drawings, wherein like refer-erroncharacters refer tosi la r-parts throughout-the several views; and in which? 'Figf-I is afront perspective view of an air conditioner of" this invention havingawood console type'cabinet'.

Fig. 2' is a rearperspective viewofFig; 1- showing the cooling air inletand outlet openings. v

Fig. 3'is'a front elevational view" ofFi'g. 1' with the frontcabinet'panel removed 'to' show the internal mechanism.

Fig. 4 is a vertical sectional view of Fig. 3 taken at the section lines44.

Fig. 5 is a projected view of the blower housing of Fig. 4 showing itsleft hand side with a serpentine refrigerant conduit metallically bondedto the outside of its scroll.

Fig. 6 is a projected View of the blower housing 20 of Fig. 4 showingits right hand side with a continuation of the serpentine refrigerantcondluitof .Fig'. 5 metallically bonded to the: blower scroll.

Fig. 7 is a horizontal cross sectional view of Fig. 4 at section lines'l-i, looking vertically downwamdi'into the air conditioner.

Fig. 8. is a rear elevational view of the removable front panel of theair conditioner cabinet shown Fig-.11.

Fig. 9 is an inside elevational view of the left hand cabinet side panelshown in Fig. 1.

Fig. 10 is a perspective view of a chassis for an air conditioner ofthis invention- The 1c is constructed a right hand sheet: metal sidepanel is and left hand side panel 1 3 aligned in parallel' relation andjoineti by welding to interposed. lo-shaped partition 'lt-and bottom pan1%. The chassis si'de pari'el'sh ave'front flanges l t, and rearfi'angesl'l; and are constructed with rectanguiaropenings F8 for theiii-letof'recircu-lated cooledair through. the air conditioner; Thelefthand side: panel +3 has'acircular opening i ilf i n its lowerportion for access to the inside of blower" housing 2 8 shown assembledthereto in Figs. B and? 1*. In the'lower' portion of right handsidepanel 121 s a circular opening 2+ used for access through the panelduring assem'biy, inspection, and service.

The chassis side panels {2 and it have. eachtwo-bolt holes f2 2s'ym'rnetrical ly spaced for bolts 23% used to secure the cabinet si'depanels Z l to theirrespective sides of" the chassis. The front flangesto of the two chass'isside panels 1'2 and t3- have each-two bolt holes25 symmetrically spaced forholts' 26' to secure cabinet side panels 2 -4to their respective. sides of the chassis. Thus each side'pa'nel of-thecabinet is-secured to its respec tive sideoff the chassis with fourbolts, and by meansoi" these bcitsmav be readily assembled to, ordisassembledffrom, the chassis; V I

The chassis'bottompan [,5 has sides 2"! formed vertically upwardandwelded water tight at the corners. "Thefianged sidesv 21 arespot-weldedto chassis sidepanels 1'21 and #3 respectively; and to frontflanges t6 and rear flanges IT of the chassis side panels. Thus pan toserves as a transverse structuralmem ber: for the chassis; and inaddition .it is used-to catch. condensate that might accidentallydI'OpjfiOHl the air conditioning mechanism. Anycondensate thatifa-llsiinto pan 1'5 will be distributed over a considerable surface area "andstibj ect'ed to a flow of heated air; as be hereinafter explained, toreeva'porate the condensate into an outgoingstream of condenser cooling;air.

The ll-shape'd partition [4" has at each end verti'nalLfiangesZid'forrned on its vertical portion,

at, each end horizontal flanges 2 Elf-formed. on its horizontal portion,as shown. in Fig; .41 TheseflangesZB' and 25' are spot weldedrespectively to chassis side panels 1 2' and I3 so? that.

the 1 partition .ld' becomes a transverse structural. member of thechassis; 'In'ad dition to being a stru'cturaimember off the chassispartition l t in] t upp ve t lrporti n; it provides one side" 7,of'each- "of-the two'condenser cooling air ducts, and its lowerhorizontalportibmbrovides a supscribed and explained in detail.

porting base for the evaporator assembly of the air conditioner, as willbe hereinafter more fully described, and in addition it supports thecondenser 55 suspended beneath it.

At the upper portion of the chassis is a horizontal sheet metal member30 spot-welded to the top of partition I4. At each end of member 30These louvers may be assembled, as an alternate,

within the opening 32 of each cabinet side panel 24. Whether louver 33is assembled to the chassis side panels as shown, or to the cabinet sidepanels 24, is a manufacturing choice giving about the same end resultssince cabinet side panel openings 32 and chassis side panel openings l8are in contiguous register.

Cabinet side panels 24 are constructed in an L-shaped section so thateach side panel has a flange 34 extending around its respective frontcorner of the cabinet chassis covering at least a portion of the frontflanges l6 of the chassis side panels I2 and I3. In assembly bolts 26hold flanges 34 tightly in flat contact with chassis flanges l6 so thatthe inside corners of the side panels 24 fit around the front corners ofchassis panels l2 and 13 in full contact. Bolts 23 secure the rearportions of the cabinet side panels 24 in flat contact with therespective chassis side panels 12 and I3. Thus any compressive forcesupon the outside of the cabinet side panels will be referred directly tothe respective chassis side panels underneath, and the structuralstrength of the sheet metal chassis panels will support the wood sidepanels 24 of the surrounding cabinet. Fiber board insulation 35 is gluedto the inside surface of the side panels 24 for the purpose ofrestricting the transmission of heat and sound through the panels.

In the edges of cabinet side panel flanges 3d are grooves 3'6 arrangedto receive the side edges of cabinet front panel 31. The cabinet isconstructed by assembling its separate portions to the air conditionerchassis. First the two cabinet side panels 24 are assembled to thechassis as explained above. The front panel 31 is constructed so that itis assembled to the front of the cabinet by sliding it verticallydownward with its side edges fitting the grooves 35 in the cabinet sidepanel flanges 34. The front panel 3! is retained by its bottom sideportions resting upon flanges 38 at the front bottom of the chassis sidepanels I2 and I3. Reinforcing wood strips 39 are provided inside thefront panel 37 which may be made of plywood, and fiber board insulation40 is provided for restricting the transmission of heat and soundthrough the panel 37.

A circular opening 4| is provided in front cabinet panel 31, shown inFig. 8, and a louver 42 is assembled behind this opening as shown inFig. 1. This opening and louver is for the outlet of cooled air from theair conditioner.

The back cover of the air conditioner cabinet is constructed of severalparts which will be de- At .the lower 5 6 rear portion of the cabinet isa removable'sheet metal panel t4 insulated with fiber board 93 andassembled to the rear chassis side panel flanges ll with sheet metalscrews. Just above removable panel 44 and extending under its upperportion, is a sheet metal transverse chassis structural member 45spot-welded at each end to the inside of flanges ll of the chassis sidechannels. This transvers'estructural member adds strength to thechassis, it provides support for the top of removable panel 44 to whichpanel 44 is attached with sheet metal screws, and it provides a supportfor an interchangeable series of wooden rear panelparts which will bedescribed following.

Above transverse chassis member 45 and resting upon it is tongue andgrooved board 46 having its groove downward and its tongue upward. Aboveboard 45 is a second tongue and grooved board 47 asembled in tongue andgroove register with board 46. Board 41 is substantially narrower thanboard 46. Above board 41 is a rectangular, wooden, tongue and groovedduct collar frame 459 assembled in tongue and groove register with board41. Above duct collar frame 49, and assembled in tongue and groovedregister with it, is tongue and grooved board 48 having its upwardpositioned tongue top in a plane with the tops of the chassis sidepanels l2 and I3.

The cabinet top panel 52 is hinged to transverse tongue and groovedboard. 48 with hinges 53. This top panel may bemade of plywood.

Within the duct collar frame .49 is assembled rectangular sheet metalair outlet duct collar 50, and rectangular sheetmetal air outlet ductcollar 5i. These collars are arranged forthe attachment of ductsextending through a window for the intake and discharge of condensercooling air. Such a duct is not shown herein since it may be constructedin the usual way, and is not a part of this invention. The tongue andgrooved boards 46, 47 and 48, and the duct collar frame 4d are securedtothe inside of the flanges l! of the chassis side panels [2 and I3, bymeans of bolts at their ends. These four parts are interchangeable intheirvertical assembly relationship. Thus the duct collarframe 49 may beselectively arranged in different vertical locations within the backpanel assembly of the cabinet. Boards 46, Al and 48 are made ofdifferent widths selected to give the greatest variety of locations forselectively positioning the duct collars. If the exact location for theduct collars cannot be obtained'as desired from an assembly of the threetongue and grooved boards-in any of their possible combinations, thenone of the tongue and grooved boards may be; sawed. longitudinally intotwo widths which when separated and. relocated will provide the exactvertical spacing of the duct collars desired.

A rectangular sheet metal partition 43, shown in Fig. 7, between thetongue and grooved wooden members of the cabinet back panel, and thevertical portion of the L shaped partition I4, separates the condenserair inlet duct from the condenser air outlet duct. This partition-43 isin alignment and contact with the separating flange 54 between the ductcollars 5t and 5!, and this partition contact will be had in allvertical positions of the duct collars within the limits of theirselective assembly.

A fin tube condenser 55 is constructed with a right hand header plate 56and a left hand header plate 51. Both of these header plates arerectangular andflanged with holes in the flanges for assembly bolts. .Bthi e. condenser cpil and its the blower housing at a point where theair flow through the blower wheel will disperse the condensate againstthe inside of the blower scroll to wet a substantial portion of itssurface. The blower housing 20 becomes an evaporative condenser removingheat from the refrigerant in serpentine tube by evaporation ofcondensate within the blower scroll which is in heat transfer relationwith tube 6i? by reason of its being metallically fused to serpentinetube 60.

An electric line conductor cord 92 enters the cabinet through chassismember t shown in Fig. 2 to connect with conventional air conditioneroperating circuits not shown.

In operation the evaporator fan 75 draws room air to be conditionedthrough the two iouvers 33 in the sides of the air conditioner cabinet,through the two evaporator coils 14, and then discharges it from thecabinet through cool air discharge louver 32. When the air passesthrough the evaporator coils M, heat and water vapor is removed from theair. The heat is absorbed by the refrigerant within the evaporat-ors asit changes from a liquid to vapor state and is carried by therefrigerant vapor into the compressor 65 where the vapor is compressedto a pressure that will cause it to give up its heat in the condenser ofthis invention which will be described in detail following.

The air cooled condenser of this invention is a three phase condenser.Phase one is the fin tube section of the condenser 55; phase two is theblower housing which acts as an evaporative condenser as explainedabove; and, phase three is the condensing surface of the extended endbends 58 of condenser 55. Condenser cooling air enters the airconditioner through duct collar which may be connected by a duct tooutdoors air. The cooling air inlet duct is defined on four sides by thecabinet back panel assembly, a portion of chassis side panel l2, thevertical portion of partition l4, and the duct partition 43. At the topthis duct is closed by chassis member 30, and at its bottom this coolingair inlet duct is open and in direct communication with the fin tubeportion of condenser 55. Condenser header plates '56 and 57 and thecabinet front panel 31 confine the incoming condenser air to flowingthrough th fin tube section of condenser 55, from which it passesdownward flowing over the compressor 55, over the blower motor 64 andinto the blower housing 25.

The condenser air discharge duct from the blower housing 20 is definedon its four sides by chassis side plate l3, the cabinet back panelassembly, a portion of partition [4, and duct partition 43 together withcondenser header plate 51 as one side. The top of the discharge duct isa portion of chassis member 30, and the outlet of the duct is throughduct collar 5| in th cabinet back panel assembly.

Centrifugal blower wheel 63 draws condenser cooling air into the airconditioner through the condenser air inlet duct above, described,thence through the fin tube portion of the condenser 55, over and aroundthe compressor 65 and the blower motor 64 over bottom pan l5 and intothe blower housing 25. Then blower wheel 63 discharges the cooling airinto the blower housing 20 where the air evaporates condensate deliveredthrough conduit and absorbs heat from the refrigerant in serpentine tube50. The cooling air then passes from the blower housing 20 at highvelocity over the extended end bends 58 of the condenser 55 and into thecondenser air .outlet bodied in blower Zihahd second through the con--denser 55. The condenser cooling air flows first through the fin tubesection of condenser 55 and second through the. evaporative'condenserembodied in blower 20. The combination of these two condensers incounterflow heat exchange re.

lation provides very eflicient condensing and low head pressures'ininvention.

When the cooling air passes through the fin tube section of condenser 55it is heated several degrees by the absorption of heat from thecondenser 55. When this air then passes through theblower housing 20where it evaporates condensate, the evaporation of the condensateabsorbs heat from the air and cools it in the" evaporation process. Thecondenser air that is discharged by the blower over the condenser endbends 58 is therefore cooler than it is when it leaves the fin' tubesection of the condenser 55. This'intercooling of thecondenser air.between the fin tube section and the extended end bends 58 adds newcondenser efiiciency. to air ing this invention.

The structure disclosed in this specification is new to the art and itaccomplishes a number of advantages over the console type airconditioners now known to the art. It accomplishesthe nine. (9) valuableobjectives enumerated in the first part of. this specification. Thisinvention has produced a small, compact, simple air conditionerstructure of high operating efficiency that is well adapted to quantityproduction at low cost.

It is understood that this invention is not to be restricted to' theexact types of parts and the particular arrangement shown in thedrawings since these may be modified under the teachings ofthisspecification and will then come within the scope of the appendedclaims without departing from the scope and spirit of this invention.

Having thus described and explained my invention, I claimf conditionersembody- 1. A console air conditioner comprising a chassis, acondensing'unit and an air cooling evaporator. unit within said chassis,an L section side panel assembled to each side of said chassissymmetrically with its foot section covering a front cornerportion'of'the chassis and being adapted to retain a sideof a frontpanel, a front panel removably retained atthe front of said chassis bysaid foot sections of said side panels, and a top panel secured to thetop of said chassis.

-2. -A console air conditioner comprising a chassis,-a cabinet enclosingsaid chassis, a condensing unit and an air cooling evaporator unitwithin said chassis, said cabinet including an L section side panelassembled to each side of said chassis symmetrically with its .footsection covering a. front corner portion of the chassis and beingadapted to retain a side of a cabinet front panel, said side panelsbeing conterminous with and firmly secured to the outside front cornerportions and sides of said chassis, a front panel removably retained atthe front of said chassis by the air conditioner of this aeoncoo 1 1%.said foot sections: or: said sideananelsiand; a ton, panel secured to;the; tonirears portion: of Said chassis.

3: An air cooled: air: conditionen comprisin a. chassis, a cabinetenclosinesaidzxchassis, said: chassis comprising: tworv verticalchannel; side: members joined: with a; bottom panel; and am. Ll. shaped:partition as: transverse. structural. mom:- bers and a. duct. partition:adjoining said. L) shaped partition; said-1 L.. shaped? partition;ranged in conjunctiomwith;saidrichassisz cabinet; and: duct: partition;tordelineate: an: evaporator: chamber, a; condensing: umt'; chamber and:two; cooling airducts; an airccoolingrevaporatonmiiti said evaporator:chamber, and: an. air cooled: condensingv unit; in; said-condensing:uniir chameber;

41 An.- airxcoolesb air; conditionerscomprisingza: cabinet constructed:with arrears panel; assembly;.. an air cooling evaporator unit and anair; cooled; condensing; unit within. cabinets. two; vertical: coolingair' ducts; thdupper: roan-portion: of": said: chassis defined: in:partzbyrsaid reanpanei assembly and: ariangedin; communication; with;-said? condensing umt; said; roan panel: assembly comprising a:horizontallm tongue and grooved: wood: frame having two:openingsinregistenwith; said. two air ducts. and". a. plurality of horizon-'tally" tongue and; grooved: boards or: different:

widths; adapted for" interchangeable: assembly? with:.said woodfr'ameior: selectively positioning? said wood: frameverticallyrim said;rear cabinet? panel;

5.. An air cooled;- air; conditioner.- comprising a cabinet constructedwith a reartpanelassembly;

an l-;. shaped partitionwithin" said".cabinei'r;v an air duct partitionadjoiningsaid: L. shapedtpan tition, said L shaped partition;- arranged:in con-- junction with said: cabinet and", duct: partition to. delineatean evaporator chamber;: a condensing unit chamber, andtwmcoolmgrainductsanzair. cooling-evaporator unitrin: said: evaporatonchamie bar; andan air cooled." condensing: unit in said condensing unit chamber-incommunication with said. two cooling: air ducts,- said. rearipanelassemblyt comprising a. horizontally: tongue and grooved wood framehaving: twoopenings-. in; communicating: register with; said? two airducts; and. a plurality of? horizontally tongue: and.

grooved boards: of." diilerent: widths. adapted" for."

interchangeable: assembly with: said wood. frame adapted for selectivelypositioning? said wood frame vertically in said rear cabinet: panel assembly;

6;. An: air cooled air: conditioner comprising: an: enclosing. cabinet,am inlet opening and. an: air outlet opening: for: condenser cooling;air: in: said. cabinet,. an: air" cooling evaporatorunit within saidcabinet, at condensing unit within said: cabinet in communicationwithsaid airinlet opening comprising: a. fintu-becondenser; acompressor, andaa blower arranged to draw cooling air in. se uencethrough said cabinet" air=inlet opening, through said ifintubecondenser, a portionover-said compressor, and finally: all of the:cooling air intothe, inlet ofsaidblower, a duct establishingcommunication between the discharge outlet of saidiblower' and the saidcabinet outlet openings. and extended; end bonds of the 12 tubes... atone: end. of: said. finztube; condenser; exetendingaintosaid.duct-andsubstantiallyacrossits width;

7'; An. air: cooled: air; conditioner comprising an. enclosing:cabinet,v an air: inlet opening and. an airoutlet opening-for. condensercooling airrin saidcabinet, anair cooling evaporator unit with: in saidcabinet, a condensing unit within said cabinet in. communication withsaid airinlet opening comprising-a fin. tube..- condenser, a-compressor,and a blowerarranged to draw coolin air in sequence thronghsaid.vcabinet air; inlet opening, throughsaidfin'.tubecondenscr, a portionover said compressonandfinally all oirthe cooling air into. theeinletof:said? blower; a; duct establishing communication between the dis! chargeoutlet. of said blower and the said cabinet outlet opening",v andextended end bends of: the tubeswatyoner end of said finbllbQOOndGIlSBPifiX tending intosaid duct-and substantially across-itswidth, said fin. tube; condenser being disposed horizontally withinsaid. cabinet: and constructed with aface areasubstantially equal tothezim ternal horizontal cross sectional area of said;

. cabinetso that the-walls ofzsaid cabinet; sen/etc retainand directthesflow ofcooling. air throughsaid fin tube; condenser;

8. Anaircooled air'conditioner comprising:an enclosing cabinet, acondenser cooling airinlet opening-and outlet: opening: in saidcabinet", an air: cooling evaporator unit' in said: cabinet; an aircooled condensing unit. within said. cabinet. in communication with; airinlet" opening; said; condensing. unit? comprising" a fin tube. conedenser; a; compressor; and: a; centrifugal blower arranged: to: drawcondenser cooling air in; se;-' quence through saidcabinet air'in-letopening,- throughsaidfin; tube condenser, a part over said: compressor;.and=finall3oal1iofrthe cooling airrintov the inlet: opening'roiisaid:blower; a serpentine refrigerant conduit? metallically fused. to. the.scroll. of said? blower and: arranged to establish fluid; communicationbetween; the discharge out let: of: said; compressor and? therefrigerant: inlet tube; of? said fin; tube condenser; conduit: means:for delivering. condensed: Water; vapor-from. said, evaporator unit":to; the; inside of. said; blower, a duct: establishing" communicationbetween; the discharge; outlet of" said: blower: and saidcabinet outletopening; and: extendedi end bends of the: tubesatone: end of saidntube-Lcondenser: cit-- tending into said duct and substantiallyacross.itswidtln ALLEN TRASK.

References Gited then-lo. of. thispatent- UNITED STATES PATENTS

